K3 spurious radiation?
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There are -many- bogus spots showing up on the
DX Summit site, and most seem to originate from "skimmers" running amuck. W3LPL's seems to be among the largest error generators. 73! Ken - K0PP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Hi to the list
Even though I am an extra I am still a newbe in HF could someone please explain what a skimmer is and its function? Thanks in Advance. Best 73's HANFORD R. WRIGHT WA4LZC CRA # 1515 CCA# AC11-12590 -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Ken G Kopp Sent: Tuesday, January 24, 2012 11:56 To: [hidden email] Subject: [Elecraft] K3 spurious radiation? There are -many- bogus spots showing up on the DX Summit site, and most seem to originate from "skimmers" running amuck. W3LPL's seems to be among the largest error generators. 73! Ken - K0PP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Go to these websites. Everything you want to know about CWSkimmer & reverse
beacons: http://www.dxatlas.com/CwSkimmer/ http://www.dxatlas.com/CwSkimmer/Files/Skimmerintro.pdf http://www.reversebeacon.net/ Frank - W6NEK ----- Original Message ----- From: "Hanford R Wright" <[hidden email]> To: "'Ken G Kopp'" <[hidden email]>; <[hidden email]> Sent: Tuesday, January 24, 2012 10:24 AM Subject: Re: [Elecraft] K3 spurious radiation? > Hi to the list > Even though I am an extra I am still a newbe in HF could someone please > explain what a skimmer is and its function? Thanks in Advance. > Best 73's > HANFORD R. WRIGHT WA4LZC > CRA # 1515 CCA# AC11-12590 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Hanford R Wright
To everyone on the list that responded to my newbe question thank you...
;-) Best 73's HANFORD R. WRIGHT WA4LZC CRA # 1515 CCA# AC11-12590 -----Original Message----- From: Roger D Johnson [mailto:[hidden email]] Sent: Tuesday, January 24, 2012 13:48 To: Hanford R Wright Subject: Re: [Elecraft] K3 spurious radiation? Hi Han... See here: http://www.dxatlas.com/CwSkimmer/ These things can be interfaced with packet to send out spots for everything they hear! 73, Roger On 1/24/2012 1:24 PM, Hanford R Wright wrote: > Hi to the list > Even though I am an extra I am still a newbe in HF could someone please > explain what a skimmer is and its function? Thanks in Advance. > Best 73's > HANFORD R. WRIGHT WA4LZC > CRA # 1515 CCA# AC11-12590 > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Ken G Kopp > Sent: Tuesday, January 24, 2012 11:56 > To: [hidden email] > Subject: [Elecraft] K3 spurious radiation? > > There are -many- bogus spots showing up on the > DX Summit site, and most seem to originate from > "skimmers" running amuck. W3LPL's seems to > be among the largest error generators. > > 73! > > Ken - K0PP > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Remember the Liberty (AGTR-5) http://www.usslibertyveterans.org/ http://www.gtr5.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Ken G Kopp
Ken,
I hear that some wise guys are sending the calls of DX stations, "CQ callsign" or "de callsign", on oddball frequencies so they will show up as skimmer spots. That might explain some of the bogus spots being posted on the DX cluster network. I have seen quite a few low band spots for Asian DX stations from W3LPL hours after Frank's sunrise. Having operated DX contests at W3LPL at the 160M position since the mid '90's, I know what DX can be expected to be heard after sunrise. I'm pretty sure that the source of those bogus spots are ops with a twisted sense of humor who are within radio range of skimmer receivers . Maybe they are trying to make W3LPL and other skimmer stations look bad so they will turn them off. Skimmers have resulted in my adding many new band countries to the K1HTV low power totals. Now have over 2800 worked with 100 Watts. Still having fun in Ham Radio after almost 54 years and loving my K3! 73, Rich - K1HTV = = = -----Original Message----- From: Ken G Kopp [mailto:[hidden email]] Sent: Tuesday, January 24, 2012 11:56 AM To: [hidden email] Subject: [Elecraft] K3 spurious radiation? There are -many- bogus spots showing up on the DX Summit site, and most seem to originate from "skimmers" running amuck. W3LPL's seems to be among the largest error generators. 73! Ken - K0PP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Ken G Kopp
Thank you Tom, Geof, and Eduardo for responding. I feel a bit better that I am
not alone experiencing this situation, however want to prove it is not from my rig. I started wondering since the skimmer rx's are sdr's, this might have something to do with digital sampling aliasing. If the ADC's don't have sufficient anti-aliasing filters, strange results can result from not sampling at a sufficiently high frequency. I wonder what the sampling frequencies are for the sdr's used? Something more for me to research. Again, Tnx all for the input. 73, John/K8AZT ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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A comment on the standby receiver ... Its a good idea but like any piece of
test equipment its important to know its capabilities. If you don't hear any spurs on it you are probably ok. On the other hand, if you do hear spurs, don't get too excited. Local receivers will often hear things that won't be heard a few miles away. So the suggestion of having a local ham doing some listening is a very good one. Ideally one could see what is heard when the primary rig is working properly. Then it can more properly be used to check for problems that are expected. 73 Mike WA8BXN ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Hanford R Wright
Hi Terry
1515 is my member number in the Collins Radio Association and AC11-12590 is my number for The Collins Collectors Association. Best Regards HANFORD R. WRIGHT WA4LZC CRA # 1515 CCA# AC11-12590 -----Original Message----- From: Terry Schieler [mailto:[hidden email]] Sent: Wednesday, January 25, 2012 14:05 To: 'Hanford R Wright' Subject: RE: [Elecraft] K3 spurious radiation? Hello. I have a question for you as well. Been a ham for 50 years. What is "CRA #1515 CCA# AC-11-12590??" Don't believe I've seen that before. 73 de Terry, W0FM -----Original Message----- From: Hanford R Wright [mailto:[hidden email]] Sent: Tuesday, January 24, 2012 1:07 PM To: 'Roger D Johnson'; [hidden email] Subject: Re: [Elecraft] K3 spurious radiation? To everyone on the list that responded to my newbe question thank you... ;-) Best 73's HANFORD R. WRIGHT WA4LZC CRA # 1515 CCA# AC11-12590 -----Original Message----- From: Roger D Johnson [mailto:[hidden email]] Sent: Tuesday, January 24, 2012 13:48 To: Hanford R Wright Subject: Re: [Elecraft] K3 spurious radiation? Hi Han... See here: http://www.dxatlas.com/CwSkimmer/ These things can be interfaced with packet to send out spots for everything they hear! 73, Roger On 1/24/2012 1:24 PM, Hanford R Wright wrote: > Hi to the list > Even though I am an extra I am still a newbe in HF could someone please > explain what a skimmer is and its function? Thanks in Advance. > Best 73's > HANFORD R. WRIGHT WA4LZC > CRA # 1515 CCA# AC11-12590 > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Ken G Kopp > Sent: Tuesday, January 24, 2012 11:56 > To: [hidden email] > Subject: [Elecraft] K3 spurious radiation? > > There are -many- bogus spots showing up on the > DX Summit site, and most seem to originate from > "skimmers" running amuck. W3LPL's seems to > be among the largest error generators. > > 73! > > Ken - K0PP > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Remember the Liberty (AGTR-5) http://www.usslibertyveterans.org/ http://www.gtr5.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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